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traceoptions

Syntax

traceoptions {
file filename <replace> <size size> <files number> <no-stamp> <world-readable | no-world-readable>;
flag flag;
}

Hierarchy Level

[edit logical-systems logical-system-name protocols mpls],
[edit logical-systems logical-system-name protocols mpls label-switched-path lsp-name],
[edit protocols mpls],
[edit protocols mpls label-switched-path lsp-name]

Release Information

Statement introduced before JUNOS Release 7.4.

Description

Configure MPLS tracing options at the protocol level or for a label-switched path.

To specify more than one tracing operation, include multiple flag statements.

Default

The default MPLS protocol-level tracing options are inherited from the routing protocols traceoptions statement included at the [edit routing-options] hierarchy level.

Options

filename—Name of the file to receive the output of the tracing operation. All files are placed in the directory /var/log. We recommend that you place MPLS tracing output in the file mpls-log.

files number—(Optional) Maximum number of trace files. When a trace file named trace-file reaches its maximum size, it is renamed trace-file.0, then trace-file.1, and so on, until the maximum number of trace files is reached. Then the oldest trace file is overwritten.

Range: 2 through 1000
Default: 2 files

If you specify a maximum number of files, you must also include the size statement to specify the maximum file size.

flag—Tracing operation to perform. To specify more than one tracing operation, include multiple flag statements.

MPLS Tracing Flags

no-stamp—(Optional) Do not place timestamp information at the beginning of each line in the trace file. 

Default: If you omit this option, timestamp information is placed at the beginning of each line of the tracing output.

no-world-readable—(Optional) Allow only certain users to read the log file.

replace—(Optional) Replace an existing trace file if there is one.

Default: If you do not include this option, tracing output is appended to an existing trace file.

size size—(Optional) Maximum size of each trace file, in kilobytes (KB), megabytes (MB), or gigabytes (GB). When a trace file named trace-file reaches this size, it is renamed trace-file.0. When the trace-file again reaches this size, trace-file.0 is renamed trace-file.1 and trace-file is renamed trace-file.0. This renaming scheme continues until the maximum number of trace files is reached. Then the oldest trace file is overwritten.

Syntax: xk to specify KB, xm to specify MB, or xg to specify GB
Range: 10 KB through the maximum file size supported on your system
Default: 1 MB

If you specify a maximum file size, you must also include the files statement to specify the maximum number of files.

world-readable—(Optional) Allow any user to read the log file.

Usage Guidelines

See Tracing MPLS and LSP Packets and Operations.

Required Privilege Level

routing and trace—To view this statement in the configuration.

routing-control and trace-control—To add this statement to the configuration.

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